<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */

/**
* A class for reading Microsoft Excel Spreadsheets.
*
* Originally developed by Vadim Tkachenko under the name PHPExcelReader.
* (http://sourceforge.net/projects/phpexcelreader)
* Based on the Java version by Andy Khan (http://www.andykhan.com).  Now
* maintained by David Sanders.  Reads only Biff 7 and Biff 8 formats.
*
* PHP versions 4 and 5
*
* LICENSE: This source file is subject to version 3.0 of the PHP license
* that is available through the world-wide-web at the following URI:
* http://www.php.net/license/3_0.txt.  If you did not receive a copy of
* the PHP License and are unable to obtain it through the web, please
* send a note to license@php.net so we can mail you a copy immediately.
*
* @category   Spreadsheet
* @package    Spreadsheet_Excel_Reader
* @author     Vadim Tkachenko <vt@apachephp.com>
* @license    http://www.php.net/license/3_0.txt  PHP License 3.0
* @version    CVS: $Id: reader.php 19 2007-03-13 12:42:41Z shangxiao $
* @link       http://pear.php.net/package/Spreadsheet_Excel_Reader
* @see        OLE, Spreadsheet_Excel_Writer
*/


//require_once 'PEAR.php';
require_once 'oleread.inc';
//require_once 'OLE.php';

define('SPREADSHEET_EXCEL_READER_BIFF8',             0x600);
define('SPREADSHEET_EXCEL_READER_BIFF7',             0x500);
define('SPREADSHEET_EXCEL_READER_WORKBOOKGLOBALS',   0x5);
define('SPREADSHEET_EXCEL_READER_WORKSHEET',         0x10);

define('SPREADSHEET_EXCEL_READER_TYPE_BOF',          0x809);
define('SPREADSHEET_EXCEL_READER_TYPE_EOF',          0x0a);
define('SPREADSHEET_EXCEL_READER_TYPE_BOUNDSHEET',   0x85);
define('SPREADSHEET_EXCEL_READER_TYPE_DIMENSION',    0x200);
define('SPREADSHEET_EXCEL_READER_TYPE_ROW',          0x208);
define('SPREADSHEET_EXCEL_READER_TYPE_DBCELL',       0xd7);
define('SPREADSHEET_EXCEL_READER_TYPE_FILEPASS',     0x2f);
define('SPREADSHEET_EXCEL_READER_TYPE_NOTE',         0x1c);
define('SPREADSHEET_EXCEL_READER_TYPE_TXO',          0x1b6);
define('SPREADSHEET_EXCEL_READER_TYPE_RK',           0x7e);
define('SPREADSHEET_EXCEL_READER_TYPE_RK2',          0x27e);
define('SPREADSHEET_EXCEL_READER_TYPE_MULRK',        0xbd);
define('SPREADSHEET_EXCEL_READER_TYPE_MULBLANK',     0xbe);
define('SPREADSHEET_EXCEL_READER_TYPE_INDEX',        0x20b);
define('SPREADSHEET_EXCEL_READER_TYPE_SST',          0xfc);
define('SPREADSHEET_EXCEL_READER_TYPE_EXTSST',       0xff);
define('SPREADSHEET_EXCEL_READER_TYPE_CONTINUE',     0x3c);
define('SPREADSHEET_EXCEL_READER_TYPE_LABEL',        0x204);
define('SPREADSHEET_EXCEL_READER_TYPE_LABELSST',     0xfd);
define('SPREADSHEET_EXCEL_READER_TYPE_NUMBER',       0x203);
define('SPREADSHEET_EXCEL_READER_TYPE_NAME',         0x18);
define('SPREADSHEET_EXCEL_READER_TYPE_ARRAY',        0x221);
define('SPREADSHEET_EXCEL_READER_TYPE_STRING',       0x207);
define('SPREADSHEET_EXCEL_READER_TYPE_FORMULA',      0x406);
define('SPREADSHEET_EXCEL_READER_TYPE_FORMULA2',     0x6);
define('SPREADSHEET_EXCEL_READER_TYPE_FORMAT',       0x41e);
define('SPREADSHEET_EXCEL_READER_TYPE_XF',           0xe0);
define('SPREADSHEET_EXCEL_READER_TYPE_BOOLERR',      0x205);
define('SPREADSHEET_EXCEL_READER_TYPE_UNKNOWN',      0xffff);
define('SPREADSHEET_EXCEL_READER_TYPE_NINETEENFOUR', 0x22);
define('SPREADSHEET_EXCEL_READER_TYPE_MERGEDCELLS',  0xE5);

define('SPREADSHEET_EXCEL_READER_UTCOFFSETDAYS' ,    25569);
define('SPREADSHEET_EXCEL_READER_UTCOFFSETDAYS1904', 24107);
define('SPREADSHEET_EXCEL_READER_MSINADAY',          86400);
//define('SPREADSHEET_EXCEL_READER_MSINADAY', 24 * 60 * 60);

//define('SPREADSHEET_EXCEL_READER_DEF_NUM_FORMAT', "%.2f");
define('SPREADSHEET_EXCEL_READER_DEF_NUM_FORMAT',    "%s");


/*
* Place includes, constant defines and $_GLOBAL settings here.
* Make sure they have appropriate docblocks to avoid phpDocumentor
* construing they are documented by the page-level docblock.
*/

/**
* A class for reading Microsoft Excel Spreadsheets.
*
* Originally developed by Vadim Tkachenko under the name PHPExcelReader.
* (http://sourceforge.net/projects/phpexcelreader)
* Based on the Java version by Andy Khan (http://www.andykhan.com).  Now
* maintained by David Sanders.  Reads only Biff 7 and Biff 8 formats.
*
* @category   Spreadsheet
* @package    Spreadsheet_Excel_Reader
* @author     Vadim Tkachenko <vt@phpapache.com>
* @copyright  1997-2005 The PHP Group
* @license    http://www.php.net/license/3_0.txt  PHP License 3.0
* @version    Release: @package_version@
* @link       http://pear.php.net/package/PackageName
* @see        OLE, Spreadsheet_Excel_Writer
*/
class Excel_Reader
{
	/**
	 * Array of worksheets found
	 *
	 * @var array
	 * @access public
	 */
	var $boundsheets = array();

	/**
	 * Array of format records found
	 * 
	 * @var array
	 * @access public
	 */
	var $formatRecords = array();

	/**
	 * todo
	 *
	 * @var array
	 * @access public
	 */
	var $sst = array();

	/**
	 * Array of worksheets
	 *
	 * The data is stored in 'cells' and the meta-data is stored in an array
	 * called 'cellsInfo'
	 *
	 * Example:
	 *
	 * $sheets  -->  'cells'  -->  row --> column --> Interpreted value
	 *          -->  'cellsInfo' --> row --> column --> 'type' - Can be 'date', 'number', or 'unknown'
	 *                                            --> 'raw' - The raw data that Excel stores for that data cell
	 *
	 * @var array
	 * @access public
	 */
	var $sheets = array();

	/**
	 * The data returned by OLE
	 *
	 * @var string
	 * @access public
	 */
	var $data;

	/**
	 * OLE object for reading the file
	 *
	 * @var OLE object
	 * @access private
	 */
	var $_ole;

	/**
	 * Default encoding
	 *
	 * @var string
	 * @access private
	 */
	var $_defaultEncoding;

	/**
	 * Default number format
	 *
	 * @var integer
	 * @access private
	 */
	var $_defaultFormat = SPREADSHEET_EXCEL_READER_DEF_NUM_FORMAT;

	/**
	 * todo
	 * List of formats to use for each column
	 *
	 * @var array
	 * @access private
	 */
	var $_columnsFormat = array();

	/**
	 * todo
	 *
	 * @var integer
	 * @access private
	 */
	var $_rowoffset = 1;

	/**
	 * todo
	 *
	 * @var integer
	 * @access private
	 */
	var $_coloffset = 1;

	/**
	 * List of default date formats used by Excel
	 *
	 * @var array
	 * @access public
	 */
	var $dateFormats = array (
		0xe => "d/m/Y",
		0xf => "d-M-Y",
		0x10 => "d-M",
		0x11 => "M-Y",
		0x12 => "h:i a",
		0x13 => "h:i:s a",
		0x14 => "H:i",
		0x15 => "H:i:s",
		0x16 => "d/m/Y H:i",
		0x2d => "i:s",
		0x2e => "H:i:s",
		0x2f => "i:s.S");

	/**
	 * Default number formats used by Excel
	 *
	 * @var array
	 * @access public
	 */
	var $numberFormats = array(
		0x1 => "%1.0f",     // "0"
		0x2 => "%1.2f",     // "0.00",
		0x3 => "%1.0f",     //"#,##0",
		0x4 => "%1.2f",     //"#,##0.00",
		0x5 => "%1.0f",     /*"$#,##0;($#,##0)",*/
		0x6 => '$%1.0f',    /*"$#,##0;($#,##0)",*/
		0x7 => '$%1.2f',    //"$#,##0.00;($#,##0.00)",
		0x8 => '$%1.2f',    //"$#,##0.00;($#,##0.00)",
		0x9 => '%1.0f%%',   // "0%"
		0xa => '%1.2f%%',   // "0.00%"
		0xb => '%1.2f',     // 0.00E00",
		0x25 => '%1.0f',    // "#,##0;(#,##0)",
		0x26 => '%1.0f',    //"#,##0;(#,##0)",
		0x27 => '%1.2f',    //"#,##0.00;(#,##0.00)",
		0x28 => '%1.2f',    //"#,##0.00;(#,##0.00)",
		0x29 => '%1.0f',    //"#,##0;(#,##0)",
		0x2a => '$%1.0f',   //"$#,##0;($#,##0)",
		0x2b => '%1.2f',    //"#,##0.00;(#,##0.00)",
		0x2c => '$%1.2f',   //"$#,##0.00;($#,##0.00)",
		0x30 => '%1.0f');   //"##0.0E0";

	// }}}
	// {{{ Spreadsheet_Excel_Reader()

	/**
	 * Constructor
	 *
	 * Some basic initialisation
	 */ 
	function Excel_Reader()
	{
		$this->_ole =& new OLERead();
		$this->setUTFEncoder('iconv');
	}

	// }}}
	// {{{ setOutputEncoding()

	/**
	 * Set the encoding method
	 *
	 * @param string Encoding to use
	 * @access public
	 */
	function setOutputEncoding($encoding)
	{
		$this->_defaultEncoding = $encoding;
	}

	// }}}
	// {{{ setUTFEncoder()

	/**
	 *  $encoder = 'iconv' or 'mb'
	 *  set iconv if you would like use 'iconv' for encode UTF-16LE to your encoding
	 *  set mb if you would like use 'mb_convert_encoding' for encode UTF-16LE to your encoding
	 *
	 * @access public
	 * @param string Encoding type to use.  Either 'iconv' or 'mb'
	 */
	function setUTFEncoder($encoder = 'iconv')
	{
		$this->_encoderFunction = '';

		if ($encoder == 'iconv') {
			$this->_encoderFunction = function_exists('iconv') ? 'iconv' : '';
		} elseif ($encoder == 'mb') {
			$this->_encoderFunction = function_exists('mb_convert_encoding') ?
									  'mb_convert_encoding' :
									  '';
		}
	}

	// }}}
	// {{{ setRowColOffset()

	/**
	 * todo
	 *
	 * @access public
	 * @param offset
	 */
	function setRowColOffset($iOffset)
	{
		$this->_rowoffset = $iOffset;
		$this->_coloffset = $iOffset;
	}

	// }}}
	// {{{ setDefaultFormat()

	/**
	 * Set the default number format
	 *
	 * @access public
	 * @param Default format
	 */
	function setDefaultFormat($sFormat)
	{
		$this->_defaultFormat = $sFormat;
	}

	// }}}
	// {{{ setColumnFormat()

	/**
	 * Force a column to use a certain format
	 *
	 * @access public
	 * @param integer Column number
	 * @param string Format
	 */
	function setColumnFormat($column, $sFormat)
	{
		$this->_columnsFormat[$column] = $sFormat;
	}


	// }}}
	// {{{ read()

	/**
	 * Read the spreadsheet file using OLE, then parse
	 *
	 * @access public
	 * @param filename
	 * @todo return a valid value
	 */
	function read($sFileName)
	{
	/*
		require_once 'OLE.php';
		$ole = new OLE();
		$ole->read($sFileName);

		foreach ($ole->_list as $i => $pps) {
			if (($pps->Name == 'Workbook' || $pps->Name == 'Book') &&
				$pps->Size >= SMALL_BLOCK_THRESHOLD) {

				$this->data = $ole->getData($i, 0, $ole->getDataLength($i));
			} elseif ($pps->Name == 'Root Entry') {
				$this->data = $ole->getData($i, 0, $ole->getDataLength($i));
			}
			//var_dump(strlen($ole->getData($i, 0, $ole->getDataLength($i))), $pps->Name, md5($this->data), $ole->getDataLength($i));
		}
//exit;
		$this->_parse();

		return sizeof($this->sheets) > 0;
	*/

		$res = $this->_ole->read($sFileName);

		// oops, something goes wrong (Darko Miljanovic)
		if($res === false) {
			// check error code
			if($this->_ole->error == 1) {
			// bad file
				die('The filename ' . $sFileName . ' is not readable');
			}
			// check other error codes here (eg bad fileformat, etc...)
		}

		$this->data = $this->_ole->getWorkBook();


		/*
		$res = $this->_ole->read($sFileName);

		if ($this->isError($res)) {
//        var_dump($res);
			return $this->raiseError($res);
		}

		$total = $this->_ole->ppsTotal();
		for ($i = 0; $i < $total; $i++) {
			if ($this->_ole->isFile($i)) {
				$type = unpack("v", $this->_ole->getData($i, 0, 2));
				if ($type[''] == 0x0809)  { // check if it's a BIFF stream
					$this->_index = $i;
					$this->data = $this->_ole->getData($i, 0, $this->_ole->getDataLength($i));
					break;
				}
			}
		}

		if ($this->_index === null) {
			return $this->raiseError("$file doesn't seem to be an Excel file");
		}

		*/

	//echo "data =".$this->data;
		//$this->readRecords();
		$this->_parse();
	}


	// }}}
	// {{{ _parse()

	/**
	 * Parse a workbook
	 *
	 * @access private
	 * @return bool
	 */
	function _parse()
	{
		$pos = 0;

		$code = ord($this->data[$pos]) | ord($this->data[$pos+1])<<8;
		$length = ord($this->data[$pos+2]) | ord($this->data[$pos+3])<<8;

		$version = ord($this->data[$pos + 4]) | ord($this->data[$pos + 5])<<8;
		$substreamType = ord($this->data[$pos + 6]) | ord($this->data[$pos + 7])<<8;
		//echo "Start parse code=".base_convert($code,10,16)." version=".base_convert($version,10,16)." substreamType=".base_convert($substreamType,10,16).""."\n";

		if (($version != SPREADSHEET_EXCEL_READER_BIFF8) &&
			($version != SPREADSHEET_EXCEL_READER_BIFF7)) {
			return false;
		}

		if ($substreamType != SPREADSHEET_EXCEL_READER_WORKBOOKGLOBALS){
			return false;
		}

		//print_r($rec);
		$pos += $length + 4;

		$code = ord($this->data[$pos]) | ord($this->data[$pos+1])<<8;
		$length = ord($this->data[$pos+2]) | ord($this->data[$pos+3])<<8;

		while ($code != SPREADSHEET_EXCEL_READER_TYPE_EOF) {
			switch ($code) {
				case SPREADSHEET_EXCEL_READER_TYPE_SST:
					//echo "Type_SST\n";
					 $spos = $pos + 4;
					 $limitpos = $spos + $length;
					 $uniqueStrings = $this->_GetInt4d($this->data, $spos+4);
												$spos += 8;
									   for ($i = 0; $i < $uniqueStrings; $i++) {
		// Read in the number of characters
												if ($spos == $limitpos) {
												$opcode = ord($this->data[$spos]) | ord($this->data[$spos+1])<<8;
												$conlength = ord($this->data[$spos+2]) | ord($this->data[$spos+3])<<8;
														if ($opcode != 0x3c) {
																return -1;
														}
												$spos += 4;
												$limitpos = $spos + $conlength;
												}
												$numChars = ord($this->data[$spos]) | (ord($this->data[$spos+1]) << 8);
												//echo "i = $i pos = $pos numChars = $numChars ";
												$spos += 2;
												$optionFlags = ord($this->data[$spos]);
												$spos++;
										$asciiEncoding = (($optionFlags & 0x01) == 0) ;
												$extendedString = ( ($optionFlags & 0x04) != 0);

												// See if string contains formatting information
												$richString = ( ($optionFlags & 0x08) != 0);

												if ($richString) {
										// Read in the crun
														$formattingRuns = ord($this->data[$spos]) | (ord($this->data[$spos+1]) << 8);
														$spos += 2;
												}

												if ($extendedString) {
												  // Read in cchExtRst
												  $extendedRunLength = $this->_GetInt4d($this->data, $spos);
												  $spos += 4;
												}

												$len = ($asciiEncoding)? $numChars : $numChars*2;
												if ($spos + $len < $limitpos) {
																$retstr = substr($this->data, $spos, $len);
																$spos += $len;
												}else{
														// found countinue
														$retstr = substr($this->data, $spos, $limitpos - $spos);
														$bytesRead = $limitpos - $spos;
														$charsLeft = $numChars - (($asciiEncoding) ? $bytesRead : ($bytesRead / 2));
														$spos = $limitpos;

														 while ($charsLeft > 0){
																$opcode = ord($this->data[$spos]) | ord($this->data[$spos+1])<<8;
																$conlength = ord($this->data[$spos+2]) | ord($this->data[$spos+3])<<8;
																		if ($opcode != 0x3c) {
																				return -1;
																		}
																$spos += 4;
																$limitpos = $spos + $conlength;
																$option = ord($this->data[$spos]);
																$spos += 1;
																  if ($asciiEncoding && ($option == 0)) {
																				$len = min($charsLeft, $limitpos - $spos); // min($charsLeft, $conlength);
																	$retstr .= substr($this->data, $spos, $len);
																	$charsLeft -= $len;
																	$asciiEncoding = true;
																  }elseif (!$asciiEncoding && ($option != 0)){
																				$len = min($charsLeft * 2, $limitpos - $spos); // min($charsLeft, $conlength);
																	$retstr .= substr($this->data, $spos, $len);
																	$charsLeft -= $len/2;
																	$asciiEncoding = false;
																  }elseif (!$asciiEncoding && ($option == 0)) {
																// Bummer - the string starts off as Unicode, but after the
																// continuation it is in straightforward ASCII encoding
																				$len = min($charsLeft, $limitpos - $spos); // min($charsLeft, $conlength);
																		for ($j = 0; $j < $len; $j++) {
																 $retstr .= $this->data[$spos + $j].chr(0);
																}
															$charsLeft -= $len;
																$asciiEncoding = false;
																  }else{
															$newstr = '';
																	for ($j = 0; $j < strlen($retstr); $j++) {
																	  $newstr = $retstr[$j].chr(0);
																	}
																	$retstr = $newstr;
																				$len = min($charsLeft * 2, $limitpos - $spos); // min($charsLeft, $conlength);
																	$retstr .= substr($this->data, $spos, $len);
																	$charsLeft -= $len/2;
																	$asciiEncoding = false;
																		//echo "Izavrat\n";
																  }
														  $spos += $len;

														 }
												}
												$retstr = ($asciiEncoding) ? $retstr : $this->_encodeUTF16($retstr);
//                                              echo "Str $i = $retstr\n";
										if ($richString){
												  $spos += 4 * $formattingRuns;
												}

												// For extended strings, skip over the extended string data
												if ($extendedString) {
												  $spos += $extendedRunLength;
												}
														//if ($retstr == 'Derby'){
														//      echo "bb\n";
														//}
												$this->sst[]=$retstr;
									   }
					/*$continueRecords = array();
					while ($this->getNextCode() == Type_CONTINUE) {
						$continueRecords[] = &$this->nextRecord();
					}
					//echo " 1 Type_SST\n";
					$this->shareStrings = new SSTRecord($r, $continueRecords);
					//print_r($this->shareStrings->strings);
					 */
					 // echo 'SST read: '.($time_end-$time_start)."\n";
					break;

				case SPREADSHEET_EXCEL_READER_TYPE_FILEPASS:
					return false;
					break;
				case SPREADSHEET_EXCEL_READER_TYPE_NAME:
					//echo "Type_NAME\n";
					break;
				case SPREADSHEET_EXCEL_READER_TYPE_FORMAT:
						$indexCode = ord($this->data[$pos+4]) | ord($this->data[$pos+5]) << 8;

						if ($version == SPREADSHEET_EXCEL_READER_BIFF8) {
							$numchars = ord($this->data[$pos+6]) | ord($this->data[$pos+7]) << 8;
							if (ord($this->data[$pos+8]) == 0){
								$formatString = substr($this->data, $pos+9, $numchars);
							} else {
								$formatString = substr($this->data, $pos+9, $numchars*2);
							}
						} else {
							$numchars = ord($this->data[$pos+6]);
							$formatString = substr($this->data, $pos+7, $numchars*2);
						}

					$this->formatRecords[$indexCode] = $formatString;
				   // echo "Type.FORMAT\n";
					break;
				case SPREADSHEET_EXCEL_READER_TYPE_XF:
						//global $dateFormats, $numberFormats;
						$indexCode = ord($this->data[$pos+6]) | ord($this->data[$pos+7]) << 8;
						//echo "\nType.XF ".count($this->formatRecords['xfrecords'])." $indexCode ";
						if (array_key_exists($indexCode, $this->dateFormats)) {
							//echo "isdate ".$dateFormats[$indexCode];
							$this->formatRecords['xfrecords'][] = array(
									'type' => 'date',
									'format' => $this->dateFormats[$indexCode]
									);
						}elseif (array_key_exists($indexCode, $this->numberFormats)) {
						//echo "isnumber ".$this->numberFormats[$indexCode];
							$this->formatRecords['xfrecords'][] = array(
									'type' => 'number',
									'format' => $this->numberFormats[$indexCode]
									);
						}else{
							$isdate = FALSE;
							if ($indexCode > 0){
								if (isset($this->formatRecords[$indexCode]))
									$formatstr = $this->formatRecords[$indexCode];
								//echo '.other.';
								//echo "\ndate-time=$formatstr=\n";
								if ($formatstr)
								if (preg_match("/[^hmsday\/\-:\s]/i", $formatstr) == 0) { // found day and time format
									$isdate = TRUE;
									$formatstr = str_replace('mm', 'i', $formatstr);
									$formatstr = str_replace('h', 'H', $formatstr);
									//echo "\ndate-time $formatstr \n";
								}
							}

							if ($isdate){
								$this->formatRecords['xfrecords'][] = array(
										'type' => 'date',
										'format' => $formatstr,
										);
							}else{
								$this->formatRecords['xfrecords'][] = array(
										'type' => 'other',
										'format' => '',
										'code' => $indexCode
										);
							}
						}
						//echo "\n";
					break;
				case SPREADSHEET_EXCEL_READER_TYPE_NINETEENFOUR:
					//echo "Type.NINETEENFOUR\n";
					$this->nineteenFour = (ord($this->data[$pos+4]) == 1);
					break;
				case SPREADSHEET_EXCEL_READER_TYPE_BOUNDSHEET:
					//echo "Type.BOUNDSHEET\n";
						$rec_offset = $this->_GetInt4d($this->data, $pos+4);
						$rec_typeFlag = ord($this->data[$pos+8]);
						$rec_visibilityFlag = ord($this->data[$pos+9]);
						$rec_length = ord($this->data[$pos+10]);

						if ($version == SPREADSHEET_EXCEL_READER_BIFF8){
							$chartype =  ord($this->data[$pos+11]);
							if ($chartype == 0){
								$rec_name    = substr($this->data, $pos+12, $rec_length);
							} else {
								$rec_name    = $this->_encodeUTF16(substr($this->data, $pos+12, $rec_length*2));
							}
						}elseif ($version == SPREADSHEET_EXCEL_READER_BIFF7){
								$rec_name    = substr($this->data, $pos+11, $rec_length);
						}
					$this->boundsheets[] = array('name'=>$rec_name,
												 'offset'=>$rec_offset);

					break;

			}

			//echo "Code = ".base_convert($r['code'],10,16)."\n";
			$pos += $length + 4;
			$code = ord($this->data[$pos]) | ord($this->data[$pos+1])<<8;
			$length = ord($this->data[$pos+2]) | ord($this->data[$pos+3])<<8;

			//$r = &$this->nextRecord();
			//echo "1 Code = ".base_convert($r['code'],10,16)."\n";
		}

		foreach ($this->boundsheets as $key=>$val){
			$this->sn = $key;
			$this->_parsesheet($val['offset']);
		}
		return true;

	}

	/**
	 * Parse a worksheet
	 *
	 * @access private
	 * @param todo
	 * @todo fix return codes
	 */
	function _parsesheet($spos)
	{
		$cont = true;
		// read BOF
		$code = ord($this->data[$spos]) | ord($this->data[$spos+1])<<8;
		$length = ord($this->data[$spos+2]) | ord($this->data[$spos+3])<<8;

		$version = ord($this->data[$spos + 4]) | ord($this->data[$spos + 5])<<8;
		$substreamType = ord($this->data[$spos + 6]) | ord($this->data[$spos + 7])<<8;

		if (($version != SPREADSHEET_EXCEL_READER_BIFF8) && ($version != SPREADSHEET_EXCEL_READER_BIFF7)) {
			return -1;
		}

		if ($substreamType != SPREADSHEET_EXCEL_READER_WORKSHEET){
			return -2;
		}
		//echo "Start parse code=".base_convert($code,10,16)." version=".base_convert($version,10,16)." substreamType=".base_convert($substreamType,10,16).""."\n";
		$spos += $length + 4;
		//var_dump($this->formatRecords);
	//echo "code $code $length";
		while($cont) {
			//echo "mem= ".memory_get_usage()."\n";
//            $r = &$this->file->nextRecord();
			$lowcode = ord($this->data[$spos]);
			if ($lowcode == SPREADSHEET_EXCEL_READER_TYPE_EOF) break;
			$code = $lowcode | ord($this->data[$spos+1])<<8;
			$length = ord($this->data[$spos+2]) | ord($this->data[$spos+3])<<8;
			$spos += 4;
			$this->sheets[$this->sn]['maxrow'] = $this->_rowoffset - 1;
			$this->sheets[$this->sn]['maxcol'] = $this->_coloffset - 1;
			//echo "Code=".base_convert($code,10,16)." $code\n";
			unset($this->rectype);
			$this->multiplier = 1; // need for format with %
			switch ($code) {
				case SPREADSHEET_EXCEL_READER_TYPE_DIMENSION:
					//echo 'Type_DIMENSION ';
					if (!isset($this->numRows)) {
						if (($length == 10) ||  ($version == SPREADSHEET_EXCEL_READER_BIFF7)){
							$this->sheets[$this->sn]['numRows'] = ord($this->data[$spos+2]) | ord($this->data[$spos+3]) << 8;
							$this->sheets[$this->sn]['numCols'] = ord($this->data[$spos+6]) | ord($this->data[$spos+7]) << 8;
						} else {
							$this->sheets[$this->sn]['numRows'] = ord($this->data[$spos+4]) | ord($this->data[$spos+5]) << 8;
							$this->sheets[$this->sn]['numCols'] = ord($this->data[$spos+10]) | ord($this->data[$spos+11]) << 8;
						}
					}
					//echo 'numRows '.$this->numRows.' '.$this->numCols."\n";
					break;
				case SPREADSHEET_EXCEL_READER_TYPE_MERGEDCELLS:
					$cellRanges = ord($this->data[$spos]) | ord($this->data[$spos+1])<<8;
					for ($i = 0; $i < $cellRanges; $i++) {
						$fr =  ord($this->data[$spos + 8*$i + 2]) | ord($this->data[$spos + 8*$i + 3])<<8;
						$lr =  ord($this->data[$spos + 8*$i + 4]) | ord($this->data[$spos + 8*$i + 5])<<8;
						$fc =  ord($this->data[$spos + 8*$i + 6]) | ord($this->data[$spos + 8*$i + 7])<<8;
						$lc =  ord($this->data[$spos + 8*$i + 8]) | ord($this->data[$spos + 8*$i + 9])<<8;
						//$this->sheets[$this->sn]['mergedCells'][] = array($fr + 1, $fc + 1, $lr + 1, $lc + 1);
						if ($lr - $fr > 0) {
							$this->sheets[$this->sn]['cellsInfo'][$fr+1][$fc+1]['rowspan'] = $lr - $fr + 1;
						}
						if ($lc - $fc > 0) {
							$this->sheets[$this->sn]['cellsInfo'][$fr+1][$fc+1]['colspan'] = $lc - $fc + 1;
						}
					}
					//echo "Merged Cells $cellRanges $lr $fr $lc $fc\n";
					break;
				case SPREADSHEET_EXCEL_READER_TYPE_RK:
				case SPREADSHEET_EXCEL_READER_TYPE_RK2:
					//echo 'SPREADSHEET_EXCEL_READER_TYPE_RK'."\n";
					$row = ord($this->data[$spos]) | ord($this->data[$spos+1])<<8;
					$column = ord($this->data[$spos+2]) | ord($this->data[$spos+3])<<8;
					$rknum = $this->_GetInt4d($this->data, $spos + 6);
					$numValue = $this->_GetIEEE754($rknum);
					//echo $numValue." ";
					if ($this->isDate($spos)) {
						list($string, $raw) = $this->createDate($numValue);
					}else{
						$raw = $numValue;
						if (isset($this->_columnsFormat[$column + 1])){
								$this->curformat = $this->_columnsFormat[$column + 1];
						}
						$string = sprintf($this->curformat, $numValue * $this->multiplier);
						//$this->addcell(RKRecord($r));
					}
					$this->addcell($row, $column, $string, $raw);
					//echo "Type_RK $row $column $string $raw {$this->curformat}\n";
					break;
				case SPREADSHEET_EXCEL_READER_TYPE_LABELSST:
						$row        = ord($this->data[$spos]) | ord($this->data[$spos+1])<<8;
						$column     = ord($this->data[$spos+2]) | ord($this->data[$spos+3])<<8;
						$xfindex    = ord($this->data[$spos+4]) | ord($this->data[$spos+5])<<8;
						$index  = $this->_GetInt4d($this->data, $spos + 6);
			//var_dump($this->sst);
						$this->addcell($row, $column, $this->sst[$index]);
						//echo "LabelSST $row $column $string\n";
					break;
				case SPREADSHEET_EXCEL_READER_TYPE_MULRK:
					$row        = ord($this->data[$spos]) | ord($this->data[$spos+1])<<8;
					$colFirst   = ord($this->data[$spos+2]) | ord($this->data[$spos+3])<<8;
					$colLast    = ord($this->data[$spos + $length - 2]) | ord($this->data[$spos + $length - 1])<<8;
					$columns    = $colLast - $colFirst + 1;
					$tmppos = $spos+4;
					for ($i = 0; $i < $columns; $i++) {
						$numValue = $this->_GetIEEE754($this->_GetInt4d($this->data, $tmppos + 2));
						if ($this->isDate($tmppos-4)) {
							list($string, $raw) = $this->createDate($numValue);
						}else{
							$raw = $numValue;
							if (isset($this->_columnsFormat[$colFirst + $i + 1])){
										$this->curformat = $this->_columnsFormat[$colFirst + $i + 1];
								}
							$string = sprintf($this->curformat, $numValue * $this->multiplier);
						}
					  //$rec['rknumbers'][$i]['xfindex'] = ord($rec['data'][$pos]) | ord($rec['data'][$pos+1]) << 8;
					  $tmppos += 6;
					  $this->addcell($row, $colFirst + $i, $string, $raw);
					  //echo "MULRK $row ".($colFirst + $i)." $string\n";
					}
					 //MulRKRecord($r);
					// Get the individual cell records from the multiple record
					 //$num = ;

					break;
				case SPREADSHEET_EXCEL_READER_TYPE_NUMBER:
					$row    = ord($this->data[$spos]) | ord($this->data[$spos+1])<<8;
					$column = ord($this->data[$spos+2]) | ord($this->data[$spos+3])<<8;
					$tmp = unpack("ddouble", substr($this->data, $spos + 6, 8)); // It machine machine dependent
					if ($this->isDate($spos)) {
						list($string, $raw) = $this->createDate($tmp['double']);
					 //   $this->addcell(DateRecord($r, 1));
					}else{
						//$raw = $tmp[''];
						if (isset($this->_columnsFormat[$column + 1])){
								$this->curformat = $this->_columnsFormat[$column + 1];
						}
						$raw = $this->createNumber($spos);
						$string = sprintf($this->curformat, $raw * $this->multiplier);

					 //   $this->addcell(NumberRecord($r));
					}
					$this->addcell($row, $column, $string, $raw);
					//echo "Number $row $column $string\n";
					break;
				case SPREADSHEET_EXCEL_READER_TYPE_FORMULA:
				case SPREADSHEET_EXCEL_READER_TYPE_FORMULA2:
					$row    = ord($this->data[$spos]) | ord($this->data[$spos+1])<<8;
					$column = ord($this->data[$spos+2]) | ord($this->data[$spos+3])<<8;
					if ((ord($this->data[$spos+6])==0) && (ord($this->data[$spos+12])==255) && (ord($this->data[$spos+13])==255)) {
						//String formula. Result follows in a STRING record
						//echo "FORMULA $row $column Formula with a string<br>\n";
					} elseif ((ord($this->data[$spos+6])==1) && (ord($this->data[$spos+12])==255) && (ord($this->data[$spos+13])==255)) {
						//Boolean formula. Result is in +2; 0=false,1=true
					} elseif ((ord($this->data[$spos+6])==2) && (ord($this->data[$spos+12])==255) && (ord($this->data[$spos+13])==255)) {
						//Error formula. Error code is in +2;
					} elseif ((ord($this->data[$spos+6])==3) && (ord($this->data[$spos+12])==255) && (ord($this->data[$spos+13])==255)) {
						//Formula result is a null string.
					} else {
						// result is a number, so first 14 bytes are just like a _NUMBER record
						$tmp = unpack("ddouble", substr($this->data, $spos + 6, 8)); // It machine machine dependent
						if ($this->isDate($spos)) {
							list($string, $raw) = $this->createDate($tmp['double']);
						 //   $this->addcell(DateRecord($r, 1));
						}else{
							//$raw = $tmp[''];
							if (isset($this->_columnsFormat[$column + 1])){
									$this->curformat = $this->_columnsFormat[$column + 1];
							}
							$raw = $this->createNumber($spos);
							$string = sprintf($this->curformat, $raw * $this->multiplier);

						 //   $this->addcell(NumberRecord($r));
						}
						$this->addcell($row, $column, $string, $raw);
						//echo "Number $row $column $string\n";
					}
					break;
				case SPREADSHEET_EXCEL_READER_TYPE_BOOLERR:
					$row    = ord($this->data[$spos]) | ord($this->data[$spos+1])<<8;
					$column = ord($this->data[$spos+2]) | ord($this->data[$spos+3])<<8;
					$string = ord($this->data[$spos+6]);
					$this->addcell($row, $column, $string);
					//echo 'Type_BOOLERR '."\n";
					break;
				case SPREADSHEET_EXCEL_READER_TYPE_ROW:
				case SPREADSHEET_EXCEL_READER_TYPE_DBCELL:
				case SPREADSHEET_EXCEL_READER_TYPE_MULBLANK:
					break;
				case SPREADSHEET_EXCEL_READER_TYPE_LABEL:
					$row    = ord($this->data[$spos]) | ord($this->data[$spos+1])<<8;
					$column = ord($this->data[$spos+2]) | ord($this->data[$spos+3])<<8;
					$this->addcell($row, $column, substr($this->data, $spos + 8, ord($this->data[$spos + 6]) | ord($this->data[$spos + 7])<<8));

				   // $this->addcell(LabelRecord($r));
					break;

				case SPREADSHEET_EXCEL_READER_TYPE_EOF:
					$cont = false;
					break;
				default:
					//echo ' unknown :'.base_convert($r['code'],10,16)."\n";
					break;

			}
			$spos += $length;
		}

		if (!isset($this->sheets[$this->sn]['numRows']))
			 $this->sheets[$this->sn]['numRows'] = $this->sheets[$this->sn]['maxrow'];
		if (!isset($this->sheets[$this->sn]['numCols']))
			 $this->sheets[$this->sn]['numCols'] = $this->sheets[$this->sn]['maxcol'];

	}

	/**
	 * Check whether the current record read is a date
	 *
	 * @param todo
	 * @return boolean True if date, false otherwise
	 */
	function isDate($spos)
	{
		//$xfindex = GetInt2d(, 4);
		$xfindex = ord($this->data[$spos+4]) | ord($this->data[$spos+5]) << 8;
		//echo 'check is date '.$xfindex.' '.$this->formatRecords['xfrecords'][$xfindex]['type']."\n";
		//var_dump($this->formatRecords['xfrecords'][$xfindex]);
		if ($this->formatRecords['xfrecords'][$xfindex]['type'] == 'date') {
			$this->curformat = $this->formatRecords['xfrecords'][$xfindex]['format'];
			$this->rectype = 'date';
			return true;
		} else {
			if ($this->formatRecords['xfrecords'][$xfindex]['type'] == 'number') {
				$this->curformat = $this->formatRecords['xfrecords'][$xfindex]['format'];
				$this->rectype = 'number';
				if (($xfindex == 0x9) || ($xfindex == 0xa)){
					$this->multiplier = 100;
				}
			}else{
				$this->curformat = $this->_defaultFormat;
				$this->rectype = 'unknown';
			}
			return false;
		}
	}

	//}}}
	//{{{ createDate()

	/**
	 * Convert the raw Excel date into a human readable format
	 *
	 * Dates in Excel are stored as number of seconds from an epoch.  On 
	 * Windows, the epoch is 30/12/1899 and on Mac it's 01/01/1904
	 *
	 * @access private
	 * @param integer The raw Excel value to convert
	 * @return array First element is the converted date, the second element is number a unix timestamp
	 */ 
	function createDate($numValue)
	{
		if ($numValue > 1) {
			$utcDays = $numValue - ($this->nineteenFour ? SPREADSHEET_EXCEL_READER_UTCOFFSETDAYS1904 : SPREADSHEET_EXCEL_READER_UTCOFFSETDAYS);
			$utcValue = round(($utcDays+1) * SPREADSHEET_EXCEL_READER_MSINADAY);
			$string = date ($this->curformat, $utcValue);
			$raw = $utcValue;
		} else {
			$raw = $numValue;
			$hours = floor($numValue * 24);
			$mins = floor($numValue * 24 * 60) - $hours * 60;
			$secs = floor($numValue * SPREADSHEET_EXCEL_READER_MSINADAY) - $hours * 60 * 60 - $mins * 60;
			$string = date ($this->curformat, mktime($hours, $mins, $secs));
		}

		return array($string, $raw);
	}

	function createNumber($spos)
	{
		$rknumhigh = $this->_GetInt4d($this->data, $spos + 10);
		$rknumlow = $this->_GetInt4d($this->data, $spos + 6);
		//for ($i=0; $i<8; $i++) { echo ord($this->data[$i+$spos+6]) . " "; } echo "<br>";
		$sign = ($rknumhigh & 0x80000000) >> 31;
		$exp =  ($rknumhigh & 0x7ff00000) >> 20;
		$mantissa = (0x100000 | ($rknumhigh & 0x000fffff));
		$mantissalow1 = ($rknumlow & 0x80000000) >> 31;
		$mantissalow2 = ($rknumlow & 0x7fffffff);
		$value = $mantissa / pow( 2 , (20- ($exp - 1023)));
		if ($mantissalow1 != 0) $value += 1 / pow (2 , (21 - ($exp - 1023)));
		$value += $mantissalow2 / pow (2 , (52 - ($exp - 1023)));
		//echo "Sign = $sign, Exp = $exp, mantissahighx = $mantissa, mantissalow1 = $mantissalow1, mantissalow2 = $mantissalow2<br>\n";
		if ($sign) {$value = -1 * $value;}
		return  $value;
	}

	function addcell($row, $col, $string, $raw = '')
	{
		//echo "ADD cel $row-$col $string\n";
		$this->sheets[$this->sn]['maxrow'] = max($this->sheets[$this->sn]['maxrow'], $row + $this->_rowoffset);
		$this->sheets[$this->sn]['maxcol'] = max($this->sheets[$this->sn]['maxcol'], $col + $this->_coloffset);
		$this->sheets[$this->sn]['cells'][$row + $this->_rowoffset][$col + $this->_coloffset] = $string;
		if ($raw)
			$this->sheets[$this->sn]['cellsInfo'][$row + $this->_rowoffset][$col + $this->_coloffset]['raw'] = $raw;
		if (isset($this->rectype))
			$this->sheets[$this->sn]['cellsInfo'][$row + $this->_rowoffset][$col + $this->_coloffset]['type'] = $this->rectype;

	}


	function _GetIEEE754($rknum)
	{
		if (($rknum & 0x02) != 0) {
				$value = $rknum >> 2;
		} else {
//mmp
// first comment out the previously existing 7 lines of code here
//                $tmp = unpack("d", pack("VV", 0, ($rknum & 0xfffffffc)));
//                //$value = $tmp[''];
//                if (array_key_exists(1, $tmp)) {
//                    $value = $tmp[1];
//                } else {
//                    $value = $tmp[''];
//                }
// I got my info on IEEE754 encoding from
// http://research.microsoft.com/~hollasch/cgindex/coding/ieeefloat.html
// The RK format calls for using only the most significant 30 bits of the
// 64 bit floating point value. The other 34 bits are assumed to be 0
// So, we use the upper 30 bits of $rknum as follows...
		 $sign = ($rknum & 0x80000000) >> 31;
		$exp = ($rknum & 0x7ff00000) >> 20;
		$mantissa = (0x100000 | ($rknum & 0x000ffffc));
		$value = $mantissa / pow( 2 , (20- ($exp - 1023)));
		if ($sign) {$value = -1 * $value;}
//end of changes by mmp

		}

		if (($rknum & 0x01) != 0) {
			$value /= 100;
		}
		return $value;
	}

	function _encodeUTF16($string)
	{
		$result = $string;
		if ($this->_defaultEncoding){
			switch ($this->_encoderFunction){
				case 'iconv' :     $result = iconv('UTF-16LE', $this->_defaultEncoding, $string);
								break;
				case 'mb_convert_encoding' :     $result = mb_convert_encoding($string, $this->_defaultEncoding, 'UTF-16LE' );
								break;
			}
		}
		return $result;
	}

	function _GetInt4d($data, $pos)
	{
		$value = ord($data[$pos]) | (ord($data[$pos+1]) << 8) | (ord($data[$pos+2]) << 16) | (ord($data[$pos+3]) << 24);
		if ($value>=4294967294)
		{
			$value=-2;
		}
		return $value;
	}

}

/*
 * Local variables:
 * tab-width: 4
 * c-basic-offset: 4
 * c-hanging-comment-ender-p: nil
 * End:
 */

?>
